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We study the decrease of the ground-state output with increasing current in two-state quantum dot lasing. We show that the asymmetry in the thermal population redistribution breaks the symmetric dynamical evolution of the electron-hole pairs. This fully explains the transition from two-state to single-state lasing observed experimentally. The model also reproduces the temperature dependence of the two-state lasing. (c) 2005 American Institute of Physics. (DOI:10.1063/1.1995947

Electron-hole asymmetry and two-state lasing in quantum dot lasers